As seen in the Quest for the Hill, this is the Space Canadian Frost Bike. Notice how the infantry shield is tucked into the side to the right of the driver's leg. The assault rifle they carry fits nicely in the same notch on the other side, so normal Space Canadian infantry can carry their gear into battle with them on these bikes.

There you can sorta see the rest of the bike. This is the first motorcycle I've made out of Lego. Sure I did the Vesta Death Bikes, but those were easier because they didn't need wheels. This small thing took me like 2½ hours to figure out.